﻿#region license

// Copyright (c) 2010 Pekka Heikura
// 
//  Permission is hereby granted, free of charge, to any person
//  obtaining a copy of this software and associated documentation
//  files (the "Software"), to deal in the Software without
//  restriction, including without limitation the rights to use,
//  copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the
//  Software is furnished to do so, subject to the following
//  conditions:
// 
//  The above copyright notice and this permission notice shall be
//  included in all copies or substantial portions of the Software.
// 
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
//  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
//  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
//  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
//  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
//  OTHER DEALINGS IN THE SOFTWARE.
// 

#endregion

namespace Beerdriven.Mobile.Graphics.Egl
{
    using System;
    using System.Collections.Generic;
    using Interop;

    public class Attribs<TAttribsEnum>
    {
        internal readonly List<int> Attributes;

        public Attribs()
        {
            this.Attributes = new List<int>();
        }

        public void Add(TAttribsEnum attrib, int value)
        {
            this.Attributes.Add(Convert.ToInt32(attrib));
            this.Attributes.Add(value);
        }

        public void AddEnd()
        {
            this.Attributes.Add(NativeEgl.EGL_NONE);
        }
    }

    public static class AttribListExtensions
    {
        public static int[] ToIntArray<TAttributeEnum>(this Attribs<TAttributeEnum> list)
        {
            if (list == null || list.Attributes.Count == 0)
            {
                return null;
            }

            return list.Attributes.ToArray();
        }
    }
}